EP0580364A1 - Stellantriebssteuerung einer Klappe für die Klimaanlage eines Kraftfahrzeuges - Google Patents

Stellantriebssteuerung einer Klappe für die Klimaanlage eines Kraftfahrzeuges Download PDF

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Publication number
EP0580364A1
EP0580364A1 EP93305584A EP93305584A EP0580364A1 EP 0580364 A1 EP0580364 A1 EP 0580364A1 EP 93305584 A EP93305584 A EP 93305584A EP 93305584 A EP93305584 A EP 93305584A EP 0580364 A1 EP0580364 A1 EP 0580364A1
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EP
European Patent Office
Prior art keywords
contact
fixed contacts
motor
gear
movable contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP93305584A
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English (en)
French (fr)
Inventor
Toshimasa Kawabata
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Sanden Corp
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Sanden Corp
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Application filed by Sanden Corp filed Critical Sanden Corp
Publication of EP0580364A1 publication Critical patent/EP0580364A1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00821—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being ventilating, air admitting or air distributing devices
    • B60H1/00835—Damper doors, e.g. position control

Definitions

  • This invention relates to an automotive air conditioning system, and more particularly, to a damper position control device for an automotive air conditioning system having all angular position control mechanism for a gear of a motor actuator, whicb regulates the angular position of an air mix damper.
  • Fig. 1 depicts a schematic view of a damper position control device used for an automotive air conditioning system.
  • Air mix damper 1 is disposed between an evaporator and a heater core in a flow channel in which air flows in a path (not shown ) from evaporator ( not shown ) past air mix damper 1 and to heater core ( not shown ).
  • Air mix damper 1 controls the volume of air which flows to the heater core as a function of its angular position and, thereby, controls the temperature of the air in the flow channel.
  • the damper position control device includes an electric power source 2 , an electric power source switch device 3 , and a motor actuator 4 which is operatively connected to air mix damper 1 through a wire or link and which varies the angular position of air mix damper 1 .
  • Motor actuator 4 comprises a motor 41 , a gear 42 connected to the drive shaft of motor 41 , and a rotation control device 43 which controls the drive shaft of motor 41 and gear 42 .
  • Gear 42 is operatively connected to air mix damper 1 through a wire or link.
  • Rotation control device 43 includes a regulator 44 which regulates the upper and lower rotational limits of gear 42 .
  • Regulator 44 includes a movable contact 441 and fixed contacts 442a, 442b , and 442c .
  • Movable contact 441 is rotationally driven in accordance with the rotation of the drive shaft of motor 41 and gear 42
  • fixed contacts 442a , 442b , and 442c are in contact with movable contact 441 .
  • Fixed contacts 442a , 442b , and 442c are resistance elements disposed parallel to each other. Fixed contacts 442b and 442c are shorter than fixed contact 442a , and are disposed, so that they may be offset to the right and left, respectively.
  • the upper and lower rotational limits of gear 42 are governed by the connections between fixed contacts 442b and 442c and movable contact 441 .
  • Fixed contacts 442b and 442c are coupled with motor 41 through diodes 45a and 45b , which have opposite polarities.
  • Fixed contact 442a is coupled directly with electric power source switch device 3 .
  • Switch device 3 includes switches 31 and 32 which are moveable, so that they may be flaked together.
  • Switch 31 comprises a movable contact 311 which is coupled with fixed contacts 442b and 442c tbrough motor 41 , and terminals 312a and 312b which may be brought into contact with movable contact 311 and, thereby, coupled with the positive and negative poles of electric power source 2 , respectively.
  • Switch 32 comprises a movable contact 321 which is coupled with fixed contact 442a , and terminals 322a and 322b which may be brought into contact with movable contact 321 and, thereby, coupled with the negative and positive poles of electric power source 2 , respectively.
  • the damper position control device operates according to the following description. If movable contact 441 is initially positioned, such that it is in contact with the right end portions of fixed contacts 442a and 442b , as shown by the thatched, solid-line representation of contact 441 , when movable contacts 311 and 321 are brought into contact with terminals 312a and 322a , respectively; electric current flows to motor 41 from electric power source 2 through fixed contacts 442a and 442a and movable contact 441 .
  • terminals 312a and 322a may be brought into contact with contacts 311 and 321 , respectively, by signals generated from a temperature control device and may be based on a predetermined temperature, an outside temperature, and a temperature inside an automobile passenger compartment.
  • the drive shaft of motor 41 and gear 42 may rotate forward in response to the supply of electric current to motor 41 .
  • Air mix damper 1 is rotates forward in accordance with the rotation of gear 42 .
  • movable contact 441 moves left along fixed contacts 442a and 442b , as shown by arrow A , in accordance with the rotation of gear 42 .
  • air mix damper 1 rotates and movable contact 441 moves during the rotation of gear 42 .
  • Movable contact 441 is no longer in contact with the left end portion of fixed contact 442b when movable contact 441 reaches the left end portions of fixed contacts 442a and 442c .
  • the final position of contact 441 is indicated by the broken-line representation of movable contact 441 . Accordingly, the supply of electric current to motor 41 is cut off when the connection between movable contact 441 and fixed contact 442b is severed. when this connection is severed, the rotations of the drive shaft of motor 41 and gear 42 cease. Air mix damper 1 also stops at a fixed angular position in response to the cessation of the rotation of gear 42 .
  • movable contact 441 is initially positioned, so that it is in contact with the left end portions of fixed contacts 442a and 442c , as shown by the broken-line representation, when movable contacts 311 and 321 are brought into contact with terminals 312b and 322b , respectively, by signals generated by a temperature control device based on a predetermined temperature, an outside temperature, and an inside temperature; electric current flows to motor 41 from electric power source 2 through fixed contacts 442a and 442c and movable contact 441 .
  • the drive shaft of motor 41 and gear 42 rotate in the opposite direction when electric current is supplied to motor 41 .
  • Air mix damper 1 also rotates in the opposite direction in accordance with the rotation of gear 42 .
  • movable contact 441 moves right along fixed contacts 442a and 442c , as shown by arrow B , in accordance with the rotation of gear 42 .
  • air mix damper 1 rotates and movable contact 441 moves during the rotation of gear 42 .
  • Movable contact 441 is no longer in contact with the right end portion of fixed contact 442c when movable contact 441 reaches the right end portions of fixed contacts 442a and 442b , as shown by the thatched, solid-line representation. Accordingly, the supply of electric current to motor 41 is cut off when the connection between movable contact 441 and fixed contact 442c is severed. When this connection is severed, the rotations of the drive shaft of motor 41 and gear 42 cease. Air mix damper 1 also stops at the fixed angular position in response to the cessation of the rotation of gear 42 .
  • the operating angles of air mix damper 1 are determined by the length and the position of fixed contacts 442b and 442c . Nevertheless, each of fixed contacts 442b and 442c can determine only one operating angle of air mix damper 1 , and if it is necessary to increase the number of operating angles of air mix damper 1 , the number of fixed contacts may have to be increased. Accordingly, regulator 44 and, therefore, damper position control device may become larger, heavier, and more complicated in order to increase the operating angles of air mix damper 1 .
  • a damper position control device for an automotive air conditioning system controls the angular position of an air mix damper.
  • the air mix damper controls the mixture of cool air and heated air and, thereby, controls the temperature of air blown into a passenger compartment by the automotive air conditioning system.
  • the damper position control device includes a motor actuator which is capable of rotating the air mix damper in forward and reverse directions and an electric power source and an electric power source switch device.
  • the motor actuator includes a motor, a gear operatively connected to the drive shaft of the motor, and a rotation control device including a regulator which governs the upper and lower rotational limits of the drive shaft of tbe motor and gear.
  • the gear is operatively connected to the air mix damper and is capable of rotating the air mix damper in forward and reverse directions into a plurality of operating angles in accordance with the forward and reverse rotation of the gear.
  • the regulator includes three or more fixed contacts which are parallel to each other and have different lengths, and a movable contact which is in contact with two or more of the fixed contacts.
  • the movable contact moves along the fixed contacts in response to the rotations of the drive shaft of the motor and gear.
  • Electric power source switch device may be activated by signals generated from a temperature control device based on a predetermined temperature, an outside temperature, and an inside temperature. The switch permits the electric current to flow from the electric power source to the motor through the movable contact and the fixed contacts.
  • the rotational angles of the drive shaft of tbe motor and gear e.g. , the driving angles of the air mix damper, are regulated by the connections between fixed contacts and movable contact.
  • the improvement of the present invention comprises the addition of at least one gap disposed at a fixed position in the fixed contacts and dividing the fixed contacts into segments. Moreover, each of the one or more gaps further comprises a.short-circuit switch device which alternatively short-circuits the gap or isolates the segments of the fixed contact on either side of the gap.
  • Fig. 1 depicts a schematic view of a damper position control device for use in an automotive air conditioning system in accordance with the prior art.
  • Fig. 2A depicts a schematic view of a damper position control device for use in an automotive air conditioning system in accordance with a first embodiment of this invention.
  • Fig. 2B depicts an enlarged view of a gap including a short-circuit switch device of a damper position control device as depicted in Fig. 2A .
  • Fig. 3 depicts a table showing the relationship between the movement of short-circuit switch devices and the changes of the operating angles of an air mix damper of an automotive air conditioning system including a damper position control device as depicted in Fig. 2A .
  • Fig. 4 depicts a schematic view of a damper position control device for use in an automotive air conditioning system in accordance with a second embodiment of this invention.
  • Fig. 5 depicts a schematic view of a damper position control device for use in an automotive air conditioning system in accordance with a third embodiment of this invention.
  • Figs. 2A and 2B depict a first embodiment of a damper position control device for use in an automotive air conditioning system in accordance with this invention.
  • air mix damper 1 is disposed between evaporator (not shown ) and heater core (not shown ) in a flow channel (not shown ) in which air flows in a path from evaporator past air mix damper 1 and heater core.
  • Air mix damper 1 controls the volume of air which flows to heater core as a function of its angular position and, thereby, controls the temperature of the air exiting the flow channel.
  • the damper position control device includes an electric power source 2 , an electric power source switch device 3 , and a motor actuator 4 which is operatively connected to air mix damper 1 through a wire or link to vary the angular position of air mix damper 1 .
  • Motor actuator 4 comprises a motor 41 , a gear 42 connected to the drive shaft of motor 41 , and a rotation control device 43 which controls the drive shaft of motor 41 and gear 42 .
  • Gear 42 is operatively connected to air mix damper 1 through a wire or link.
  • Rotation control device 43 includes regulator 44 which regulates the upper and lower rotational limits of the drive shaft of motor 41 and gear 42 .
  • Regulator 44 includes a movable contact 441 and fixed contacts 442, 443 , and 444 .
  • Movable contact 441 is driven along fixed contacts 442, 443, and 444 in accordance with the rotation of drive shaft of motor 41 and gear 42 , and fixed contacts 442, 443 , and 444 are in contact with movable contact 441 .
  • Fixed contacts 442, 443 , and 444 are resistance elements which may be arc-shaped and extend parallel to each other.
  • Fixed contacts 443 and 444 are shorter than fixed contact 442 and are disposed, so that they may be offset to the left and right, respectively.
  • Fixed contact 443 is provided with a gap 445 whicb splits fixed contact 443 into fixed contact segments 443a and 443b .
  • the right end portion of fixed contact 443a and the left end portion of fixed contact 443b are connected to each other by a short-circuit switch 447 which alternatively short-circuits or isolates the segments on either side of gap 445.
  • Fixed contact 444 is provided with a gap 446 which splits fixed contact 444 into fixed contact segments 444a and 444b .
  • the left end portion of fixed contact 444a and the right end portion of fixed contact 444b are connected to each other by a short-circuit switch 448 which alternatively short-circuits or isolates the segments on either side of gap 446 .
  • the widths of gaps 445 and 446 are smaller than the width of movable contact 441 , as shown in Fig. 2B .
  • the upper and lower rotational limits of the drive shaft of motor 41 and gear 42 are governed by the connections between fixed contacts 443 and 444 and movable contact 441 .
  • Fixed contacts 443 and 444 are coupled with motor 41 through diodes 45a and 45b which have opposite polarities.
  • Switch device 3 is coupled directly with switch device 3 .
  • short-circuit switches 447 and 448 are operated by the operating control devices (not shown ) on a control panel (not shown ) for an automotive air conditioning system disposed inside of the automobile passenger compartment.
  • Passengers can alternatively open or close short-circuit switches 447 and 448 by manual operation of control devices according to a plurality of modes of operation for an automotive air conditioning system.
  • Switch device 3 includes switcbes 31 and 32 which may be shifted, so that they may be linked together.
  • Switch 31 comprises a movable contact 311 , which is coupled with fixed contacts 443 and 444 through motor 41 , and terminals 312a and 312b , which are alternatively in contact with movable contact 311 and which are respectively coupled with the positive and negative poles of electric power source 2 .
  • Switch 32 comprises a movable contact 321 , which is coupled with fixed contact 442 , and terminals 322a and 322b , which are alternatively in contact with movable contact 321 and which are respectively coupled with the negative and positive poles of electric power source 2 .
  • the damper position control device operates as follows. If both short-circuit switches 447 and 448 are closed and movable contact 441 is initially positioned, so that it is in contact with the left end portions of fixed contacts 442 and 443 , as depicted by the thatched, solid-line representation, when movable contacts 311 and 321 are brought into contact with terminal 312a and 322a , respectively, by signals generated from a temperature control device based a predetermined temperature, an outside temperature, and an inside temperature; electric current flows to motor 41 from electric power source 2 through fixed contacts segments 442 and 443 and movable contact 441 . The drive shaft of motor 41 and gear 42 rotates forward in response to the supply of electric current.
  • Air mix damper 1 rotates in the forward direction in accordance with the rotation of gear 42 . Moreover, movable contact 441 moves right along fixed contacts 442 and 443 , as shown by arrow A , in accordance with the rotation of gear 42 . Air mix damper 1 rotates and movable contact 441 moves during the rotation of gear 42 .
  • Movable contact 441 is no longer in contact with the right end portion of fixed contact 443 when movable contact 441 reaches the right end portions of fixed contacts 442 and 444 , as shown by the broken-line representation. Accordingly, the supply of electric current to motor 41 is cut off due to the severance of the connection between movable contact 441 and fixed contact 443 , and the rotations of the drive shaft of motor 41 and gear 42 cease. Air mix damper 1 also stops at tbe fixed angular position in response to the cessation of the rotation of gear 42 .
  • movable contact 441 is initially positioned, so that it is in contact with the right end portions of fixed contacts 442 and 444 , as depicted by the broken-line representation, when movable contacts 311 and 321 are brought into contact with terminals 312b and 322b , respectively, by signals generated from a temperature control device based on a predetermined temperature, an outside temperature, and an inside temperature; electric current flows to motor 41 from electric power sonrce 2 through fixed contacts 442 and 444 and movable contact 441 .
  • the drive shaft of motor 41 and gear 42 rotates in the opposite direction due to the reversed polarity of the supply of electric current.
  • Air mix damper 1 now rotates in the opposite direction in accordance with the rotation of gear 42 .
  • movable contact 441 moves left along fixed contacts 442 and 444 , as shown by arrow B , in accordance with the rotation of gear 42 .
  • Air mix damper 1 rotates and movable contact 441 moves left during the rotation of gear 42 .
  • the right side of movable contact 441 is no longer in contact with the left end portion of fixed contact 444 when movable contact 441 reaches the left end portions of fixed contacts 442 and 443 , as depicted by tbe thatched, solid-line representation. Accordingly, the supply of electric current to motor 41 is cut off due to the severance of connection between movable contact 441 and fixed contact 444 , and the rotations of the drive shaft of motor 41 and gear 42 cease. Air mix damper 1 also stops at the fixed angular position in response to the cessation of the rotation of gear 42 .
  • the angular width D of movable contact 441 must be larger than the width L of gaps 445 and 446 , as depicted in Fig. 2B . If the angular width D were smaller than the width L , when movable contact 441 passes through gaps 445 and 446 , all contact between movable contact 441 and fixed contacts 443 and 444 would be broken when movable contact 441 enters into gaps 445 and 446 . Accordingly, electric current would be cut off, and the rotations of the drive shaft of motor 41 and gear 42 cease. Thus, air mix damper 1 also would stop rotating while contact 441 is in gaps 445 and 446 .
  • angular width D is larger than the width L , when movable contact 441 passes through gaps 445 and 446 , at least one side of movable contact 441 is continually in contact with fixed contacts 443 or 444 , or both. Accordingly, electric current is not cut off, and the drive shaft of motor 41 and gear 42 continues to rotate, and air mix damper 1 also continues to rotate.
  • both short-circuit switches 447 and 448 are open and movable contact 441 is initially positioned in gap 446 , when movable contacts 311 and 321 are brought into contact with terminals 312a and 322a , respectively, by signals generated from a temperature control device based a predetermined temperature, an outside temperature, and an inside temperature; electric current flows to motor 41 from electric power source 2 through fixed contact 442 and fixed contact segment 443a and movable contact 441 .
  • the drive shaft of motor 41 and gear 42 rotate forward due to the supply of electric current.
  • Air mix damper 1 rotates in the forward direction in accordance with the rotation of gear 42 .
  • movable contact 441 moves right along fixed contact 442 and segment 443a , as shown by arrow A , in accordance with the rotation of gear 42 .
  • Air mix damper 1 rotates and movable contact 441 moves during the rotation of gear 42 .
  • movable contact 441 is initially positioned in gap 445 , when movable contact 311 and 321 are brought into contact with terminals 312b and 322b , respectively, by signals generated from a temperatnre control device based on a predetermined temperature, an outside temperature, and an inside temperature; electric current flows to motor 41 from electric power source 2 through fixed contact 442 and segment 443a and movable contact 441 .
  • the drive shaft of motor 41 and gear 42 rotate in the opposite direction due to the reversed polarity of supply of electric current.
  • Air mix damper 1 also rotates in the opposite direction accordance with the rotation of gear 42 .
  • movable contact 441 moves left along fixed contact 442 and segment 443a , as shown by arrow B , in accordance with the rotation of gear 42 .
  • Air mix damper 1 rotates and movable contact 441 moves during the rotation of gear 42 .
  • the driving angle of movable contact 441 i.e. , the operating angle of air mix damper 1 is regulated at about ⁇ 1- ⁇ 2- ⁇ 3.
  • short-circuit switch 448 is closed and short-circuit switch 447 is open and movable contact 441 is initially positioned, so that it is in contact with the left end portions of fixed contact 442 and fixed contact segment 443a , when movable contacts 311 and 321 are brought into contact with terminals 312b and 322b , respectively, by signals generated from a temperature control device based on a predetermined temperature, an outside temperature, and an inside temperature; electric current flows to motor 41 from electric power source 2 through fixed contact 442 and segment 443a and movable contact 441 .
  • the drive shaft of motor 41 and gear 42 rotates forward due to the reversed polarity of the supply of electric current.
  • Air mix damper 1 also rotates in the rotates forward in accordance with the rotation of gear 42 . Moreover, movable contact 441 moves right along fixed contact 442 and segment 443a , as shown by arrow A , in accordance with the rotation of gear 42 . Air mix damper 1 rotates and movable contact 441 moves during the rotation of gear 42 .
  • movable contact 441 when movable contact 441 is initially positioned in gap 445 and movable contacts 311 and 321 are brought into contact with terminals 312a and 322a , respectively, by signals generated from a temperature control device based a predetermined temperature an outside temperature, and an inside temperature; electric current flows to motor 41 from electric power source 2 through fixed contacts 442 and 444 and movable contact 441 .
  • the drive shaft of motor 41 and gear 42 rotates in the opposite direction due to the reversed polarity of the supply of electric current
  • Air mix damper 1 also rotates in the opposite direction in accordance with the rotation of gear 42 .
  • movable contact 441 moves left along fixed contacts 442 and 444 , as shown by arrow B , in accordance with the rotation of gear 42 .
  • Air mix damper 1 rotates and movable contact 441 moves during the rotation of gear 42 .
  • tbe driving angle of movable contact 441 i.e. , the operating angle of air mix damper 1 , is regulated at about ⁇ 1- ⁇ 3.
  • short-circuit switch 447 is closed and short-circuit 448 is open and the movable contact 441 is initially positioned in gap 446 , when movable contacts 311 and 321 are brought into contact with terminals 312b and 322b , respectively, by signals generated from a temperature control device based on a predetermined temperature, an outside temperature, and an inside temperature; electric current flows to motor 41 from electric power source 2 through fixed contacts 442 and 443 and movable contact 441 .
  • the drive shaft of motor 41 and gear 42 rotate forward duc to the supply of electric current.
  • Air mix damper 1 rotates forward in accordance with the rotation of gear 42 .
  • movable contact 441 moves right along fixed contacts 442 and 443 , as shown by arrow A , in accordance with the rotation of gear 42 .
  • Air mix damper 1 rotates and movable contact moves during the rotation of gear 42 .
  • movable contact 441 is initially positioned at the right end portions of fixed contact 442 and fixed contact segment 444a , when movable contacts 311 and 321 are brought into contact with terminals 312a and 322a , respectively, by signals generated from a temperature control device based a predetermined temperature, an outside temperature, and an inside temperature; electric current flows to motor 41 from electric power source 2 through fixed contact 442 and segment 444a and movable contact 441 .
  • the drive shaft of motor 41 and gear 42 rotate in the opposite direction due to the reversed polarity of the supply of electric current.
  • Air mix damper 1 rotates in the opposite direction in accordance with the rotation of gear 42 .
  • movable contact 441 moves left along fixed contacts 442 and segment 444a , as shown by arrow B , in accordance with the rotation of gear 42 .
  • Air mix damper 1 rotates and movable contact 441 moves during the rotation of gear 42 .
  • movable contact 441 cycles within the range between the right end portions of fixed contacts 442 and 444 and gap 446 . Accordingly, the driving angle of movable contact 441 , i.e. , the operating angle of air mix damper 1 , is regulated at about ⁇ 1- ⁇ 2.
  • movable contact 441 Even if the driving angles of movable contact 441 are fixed at ⁇ 1, ⁇ 2, and ⁇ 3, as depicted in Fig. 2A ; movable contact 441 must be completely out of contact with fixed contacts 443 and 444 , so as to cut off the electric current supplied to motor 41 and to stop the rotations of the drive shaft of motor 41 and gear 42 . Accordingly, the precise driving angles of movable contact 441 , i.e. , the precise operating angles of air mix damper 1 , may be slightly different from the fixed angles ⁇ 1, ⁇ 2, and ⁇ 3. Nevertheless, for practical purposes, these differences may be ignored in a general automotive air conditioning system.
  • Fig. 3 depicts the relation between the position of short-circuit switches 447 and 448 and the changes of the operating angles of air mix damper 1 in accordance with the first embodiment as depicted in Figs. 2A and 2B .
  • the operating angle of air mix damper 1 is regulated at about ⁇ 1.
  • the operating angle is regulated about ⁇ 1- ⁇ 2- ⁇ 3.
  • the operating angle is regulated at about ⁇ 1- ⁇ 2.
  • short-circuit switch 447 When short-circuit switch 447 is open and short-circuit switch 448 is closed, the operating angle is regulated at about ⁇ 1- ⁇ 3. Thus, because of gaps 445 and 446 and short-circuit switches 447 and 448 , four operating angles of air mix damper 1 can be defined. Further, if fixed contacts 443 and 444 are provided with more gaps and short-circuit switches, a greater number of operating angles can be defined.
  • Fig. 4 depicts a second embodiment of a damper position control device used for an automotive air conditioning system in accordance with this invention.
  • the same numerals are used in Fig. 4 to denote the corresponding elements depicted in Figs. 2A and 2B , but an explanation thereof is omitted.
  • fixed contacts 443 and 444 are shorter than fixed contact 442 and are disposed, so that they may be offset to the left and right, respectively.
  • Fixed contact 443 is provided with a gap 445 which splits fixed contact 443 into fixed contact segments 443a and 443b .
  • the right end portion of fixed contact segment 443a and the left end portion of fixed contact segment 443b are connected to each other by a short-circuit switch 447 which may alternatively short-circuit or isolate the segments on either side of gap 445 .
  • Fixed contact 444 is provided with a gap 446 which splits fixed contact 444 into fixed contact segments 444a and 444b .
  • the left end portion of fixed contact segment 444a and the right end portion of fixed contact 444b are connected to each other by a short-circuit switch 448 may which alternatively short-circuit or isolate the segments on either side of gap 446 .
  • the widths of gaps 445 and 446 are shorter than the width of movable contact 441 , as depicted in Fig. 2B .
  • the upper and lower rotational limits of gear 42 are governed by the connections between fixed contacts 443 and 444 and movable contact 441 .
  • the left end portion of fixed contact 443 and the right end portion of fixed contact 444 are respectively coupled with motor 41 through diodes 45a and 45b which have opposite polarities.
  • Fixed contact 442 is coupled directly with electric power source switch device 3 .
  • the central angle between the right end portion of fixed contact 443 and the left end portion of fixed contact 444 is fixed at about ⁇ 1.
  • the damper position control device operates as follows. If both of short-circuit switches 447 and 448 are closed and movable contact 441 is initially positioned so as to be in contact with the left end portions of fixed contacts 442 and 443 , as shown by the thatched, solid-line representation, when movable contacts 311 and 321 are brought into contact with terminals 312b and 322b , respectively, by signals generated from a temperature control device based on a predetermined temperature, an outside temperature, and an inside temperature; electric current flows to motor 41 from electric power source 2 through fixed contacts 442 and 443 and movable contact 441 . The drive shaft of motor 41 and gear 42 rotate forward in response to the supply of electric current.
  • Air mix damper 1 rotates in a forward direction in accordance with the rotation of gear 42 . Moreover, movable contact 441 moves right along fixed contacts 442 and 443 , as shown by arrow A , in accordance with the rotation of gear 42 . Air mix damper 1 rotates and movable contact 441 moves during the rotation of gear 42 .
  • the left side of movable contact 441 is no longer in contact with the right end portion of fixed contact 443 when movable contact 441 reaches the right end portions of fixed contacts 442 and 444 , as shown by the broken-line representation. Accordingly, the supply of electric current to motor 41 is cut off due to the severance of the connection between movable contact 441 and fixed contact 443 , and the rotations of the drive shaft of motor 41 and gear 42 cease. Air mix damper 1 stops at the fixed angular position in response to the cessation the rotation of gear 42 .
  • movable contact 441 is initially positioned, so that it is in contact with the right end portions of fixed contacts 442 and 444 , as shown by a broken-line representation, when movable contacts 311 and 321 are brought into contact with terminals 312b and 322b , respectively, by signals generated from a temperature control device based on a predetermined temperature, an outside temperature, and an inside temperature; electric current flows to motor 41 from electric power source 2 through fixed contacts 442 and 444 and movable contact 441 .
  • the drive shaft of motor 41 and gear 42 rotate in the opposite direction in response to the reversed polarity of the supply of electric current.
  • Air mix damper 1 rotates in the opposite direction in accordance with the rotation of gear 42 .
  • movable contact 441 moves left along fixed contacts 442 and 444 , as shown by arrow B , in accordance with the rotation of gear 42 . Air mix damper 1 rotates and movable contact 441 moves during the rotation of gear 42 .
  • the driving angle of movable contact 441 i.e. , the operating angle of air mix damper 1
  • motor actuator 4 can alternatively control air mix damper 1 , so that automotive air conditioning system operates in the outside air introduction mode or the passenger compartment air recirculation mode.
  • short-circuit switch 448 is closed and short-circuit switch 447 is open and movable contact 441 is initially positioned, so that it is in contact with the left end portions of fixed contact 442 and fixed contact segment 443a , when movable contacts 311 and 321 are brought into contact with terminals 312b and 322b , respectively, by signals generated from a temperature control device based on a predetermined temperature, an outside temperature, and an inside temperature; electric current flows to motor 41 from electric power source 2 through fixed contact 442 and fixed contact segment 443a and movable contact 441 .
  • the drive shaft of motor 41 and gear 42 rotate forward in response to the supply of electric current.
  • Air mix damper 1 rotates in the forward direction in accordance with the rotation of gear 42 .
  • movable contact 441 moves right along fixed contact 442 and segment 443a , as shown by arrow A , in accordance with rotation of gear 42 .
  • Air mix damper 1 rotates and movable contact 441 moves during the rotation of gear 42 .
  • movable contact 441 when movable contact 441 is initially positioned in gap 445 when movable contacts 311 and 321 are brought into contact with terminals 312a and 322a , respectively, by signals generated from a temperature control device based on a predetermined temperature, an outside temperature, and an inside temperature; electric current flows to motor 41 from electric power source 2 through fixed contacts 442 and 444 and movable contact 441 .
  • the drive shaft of motor 41 and gear 42 rotates in the opposite direction due to the reversed polarity of the supply electric current.
  • movable contact 441 moves left along fixed contacts 442 and 444 , as shown by arrow B , in accordance with the rotation of gear 42 .
  • Air mix damper 1 rotates in the opposite direction, and movable contact 441 moves during the rotation of gear 42 .
  • the driving angle of movable contract 441 i.e. , the operating angle of air mix damper 1 , is regulated at about ⁇ 2. For example, if the position of movable contact 441 , as shown by the thatched, solid-line representation in Fig.
  • motor actuator 4 can alternatively control air mix damper 1 , so that the automotive air conditioning system operates in the outside air introduction mode or the mixture of outside and inside air mode.
  • short-circuit switch 447 is closed and short-circuit switch 448 is open and movable contact 441 is initially positioned, so that it is in contact with the right end portion of fixed contact 442 and fixed contact segment 444a , as shown by the broken-line representation, when movable contact 311 and 321 are brought into contact with terminals 312a and 322a , respectively, by signals generated from a temperature control device based on a predetermined temperature, an outside temperature, and an inside temperature; electric current flows to motor 41 from electric power source 2 through fixed contract 442 and segment 444a and movable contact 441 .
  • the drive shaft of motor 41 and gear 42 rotates forward in response to the supply of electric current.
  • Air mix damper 1 rotates forward in accordance with the rotation of gear 42 .
  • movable contact 441 moves left along fixed contract 442 and segment 444a , as shown by arrow B , in accordance with the rotation of gear 42 .
  • Air mix damper 1 rotates and movable contact 441 moves during the rotation of gear 42 .
  • movable contact 441 when movable contact 441 is initially positioned in gap 446 and movable contacts 311 and 321 are brought into contact with terminals 312b and 322b , respectively, by signals generated from a temperature control device based on a predetermined temperature, an outside temperature, and an inside temperature; electric current flows to motor 41 from electric power source 2 through fixed contacts 442 and 443 and movable contact 441 .
  • the drive shaft of motor 41 and gear 42 rotates in the opposite direction due to the reversed polarity of the supply of electric current.
  • Air mix damper 1 rotates in the opposite direction in accordance with the rotation of gear 42 .
  • movable contact 441 moves right along fixed contact 442 and 443 , as shown by arrow A , in accordance with the rotation of gear 42 . Air mix damper 1 rotates and movable contact 441 moves during the rotation of gear 42 .
  • movable contact 441 cycles within a range between the right end portions of fixed contacts 442 and 444 and gap 446 .
  • the driving angle of movable contact 441 and the operating angle of air mix damper 1 are regulated at about ⁇ 3.
  • motor actuator 4 can alternatively control air mix damper 1 , so that the automotive air conditioning system operates in the passenger compartment air recirculation or the mixture of outside and inside air mode.
  • motor actuator 4 can more exactly regulate the operating angles of air mix damper 1 , and the damper position control device in accordance with the above embodiment can add the new operating mode (for example, in this embodiment, the mixture of outside and inside air mode) for an automotive air conditioning system without requiring additional fixed contacts.
  • Fig. 5 depicts a third embodiment of a damper position control device for use in an automotive air conditioning system in accordance with this invention.
  • the same numerals are used in Fig. 5 to denote the corresponding elements depicted in Figs. 2A and 2B , and, therefore, an explanation thereof is omitted.
  • fixed contacts 443 and 444 are shorter than fixed contact 442 , and are disposed, so that they may be offset to the left and right, respectively.
  • Fixed contact 443 is provided with gaps 445a , 445b , and 445c which divide fixed contact 443 into fixed contact segments 443a , 443b , 443c , and 443d .
  • the end portions of segments 443a , 443b, 443c , and 443d are connected to each other by short-circuit switches 447a , 447b , and 447c which respectively short-circuit or isolate the segments on either side of gaps 445a , 445b , and 445c .
  • Fixed contact 444 is provided with gaps 446a, 446b, and 446c which divide fixed contact 444 into fixed contact segments 444a, 444b, 444c, and 444d .
  • the end portions of segments 444a, 444b, 444c, and 444d are connected to each other by short-circuit switches 448a, 443b , and 448c which alternative short-circuit or isolate the segments on either side of gaps 446a, 446b , and 446c .
  • the width of the gaps are smaller than the width of movable contact 441 , as shown in Fig. 2B .
  • the upper and lower rotational limits of gear 42 are governed by the connections between fixed contacts 443 and 444 and movable contact 441 .
  • the left end portion of fixed contact 443 and the right end portion respectively of fixed contact 444 are coupled with motor 41 through diodes 45a and 45b , each of which has an opposite polarity.
  • Fixed contact 442 is coupled directly with electric power source switch device
  • Movable contact 441 can cycle within a range between the left end portions of fixed contacts 442 and 443 and the right end portion of fixed contact 443 by the operation of electric power source switch device 3 in the same way as explained in Figs. 2A-4 .
  • motor actuator 4 can regulate the driving angles of movable contact 441 , i.e. , the operating angles of air mix damper 1 , in accordance with the various alignments of short-circuit switches 447a-c and 448a-c in the same way explained with reference to Figs. 2A-4 .
  • the central angle between the central portions of gaps 445b and 446b and the central portions of gaps 445c and 446c is ⁇ 3.
  • the central angle between the central portions of gaps 445c and 446c and the right end portion of fixed contact 443 is ⁇ 4.
  • central angles ⁇ 1 through ⁇ 4 are determined according to the modes for an automotive air conditioning system, for example, VENT, B/L, FOOT, F/D, and DEF; motor actuator 4 can control air mix damper 1 at optimum operating angles determined according to various operating modes for an automotive air conditioning system.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
EP93305584A 1992-07-24 1993-07-16 Stellantriebssteuerung einer Klappe für die Klimaanlage eines Kraftfahrzeuges Withdrawn EP0580364A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP198050/92 1992-07-24
JP4198050A JPH0654484A (ja) 1992-07-24 1992-07-24 モータアクチュエータ

Publications (1)

Publication Number Publication Date
EP0580364A1 true EP0580364A1 (de) 1994-01-26

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Application Number Title Priority Date Filing Date
EP93305584A Withdrawn EP0580364A1 (de) 1992-07-24 1993-07-16 Stellantriebssteuerung einer Klappe für die Klimaanlage eines Kraftfahrzeuges

Country Status (3)

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US (1) US5342027A (de)
EP (1) EP0580364A1 (de)
JP (1) JPH0654484A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0856939A1 (de) * 1997-02-04 1998-08-05 Sanden Corporation Rotierendes Antriebssystem mit verbesserter Erkennung des Drehwinkels eines Schrittmotors
CN109297237B (zh) * 2017-07-25 2021-04-20 日本电产三协株式会社 风门装置
CN113028714A (zh) * 2019-12-25 2021-06-25 浙江三花智能控制股份有限公司 一种风门装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1016530A (ja) * 1996-07-03 1998-01-20 Sanden Corp 空調装置
AU784114B2 (en) * 2000-12-12 2006-02-09 Robert Bosch Gmbh Gear drive for an electric motor
JP2022148528A (ja) * 2021-03-24 2022-10-06 株式会社オートネットワーク技術研究所 車載通信装置及び車載通信システム

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61205506A (ja) * 1985-03-08 1986-09-11 Nippon Denso Co Ltd 車両用エアコンデイシヨナの吹出モ−ド制御装置
JPS6334215A (ja) * 1986-07-29 1988-02-13 Nippon Denso Co Ltd アクチユエ−タの駆動制御装置
US4878001A (en) * 1987-03-30 1989-10-31 Nihon Radiator Co., Ltd. Drive control device for motor actuator in automobile air conditioner
DE9003513U1 (de) * 1990-03-26 1991-01-31 Siemens Ag, 8000 Muenchen, De
JPH03253419A (ja) * 1990-03-01 1991-11-12 Harada Ind Co Ltd 自動車用空気調和装置のアクチュエータ制御装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57167817A (en) * 1981-04-07 1982-10-15 Nippon Denso Co Ltd Automatic temperature controlling device for car
JPS58206414A (ja) * 1982-05-25 1983-12-01 Diesel Kiki Co Ltd 空調用空気制御ドア制御装置の故障補償方法
US4611755A (en) * 1984-08-24 1986-09-16 Diesel Kiki Co., Ltd. Automobile air conditioner system with improved temperature control device
JPS63164017U (de) * 1987-04-15 1988-10-26
JPH054407Y2 (de) * 1987-07-18 1993-02-03
JPH0131527Y2 (de) * 1987-07-20 1989-09-27
US4907490A (en) * 1988-10-13 1990-03-13 Cirtek Corporation Vehicle climate control apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61205506A (ja) * 1985-03-08 1986-09-11 Nippon Denso Co Ltd 車両用エアコンデイシヨナの吹出モ−ド制御装置
JPS6334215A (ja) * 1986-07-29 1988-02-13 Nippon Denso Co Ltd アクチユエ−タの駆動制御装置
US4878001A (en) * 1987-03-30 1989-10-31 Nihon Radiator Co., Ltd. Drive control device for motor actuator in automobile air conditioner
JPH03253419A (ja) * 1990-03-01 1991-11-12 Harada Ind Co Ltd 自動車用空気調和装置のアクチュエータ制御装置
DE9003513U1 (de) * 1990-03-26 1991-01-31 Siemens Ag, 8000 Muenchen, De

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 11, no. 39 (M - 559)<2486> 5 February 1987 (1987-02-05) *
PATENT ABSTRACTS OF JAPAN vol. 12, no. 247 (M - 717)<3094> 13 July 1988 (1988-07-13) *
PATENT ABSTRACTS OF JAPAN vol. 16, no. 51 (M - 1209) 10 February 1992 (1992-02-10) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0856939A1 (de) * 1997-02-04 1998-08-05 Sanden Corporation Rotierendes Antriebssystem mit verbesserter Erkennung des Drehwinkels eines Schrittmotors
CN109297237B (zh) * 2017-07-25 2021-04-20 日本电产三协株式会社 风门装置
CN113028714A (zh) * 2019-12-25 2021-06-25 浙江三花智能控制股份有限公司 一种风门装置

Also Published As

Publication number Publication date
JPH0654484A (ja) 1994-02-25
US5342027A (en) 1994-08-30

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